Nearly all operating systems come with the ability to act as some kind of a server to share resources. You can set up different computers to allow others to use its peripherals, such as printers or CDROM drives and other computers to allow others to read or write to its hard disk, allowing sharing of files, while other computers may allow access to its internet connection. When you allow workstation computers to become servers and share things in this manner, it is called a peer-to-peer network. Peer-to-peer network has networks that have equal status. A typical home network might be done this way.